class Person {
  protected name: string;
  constructor(name: string) {
    this.name = name;
  }
}

class Ann {
    protected name: string;
    constructor(name: string) {
      this.name = name;
    }
  }
  
class Employee extends Person {
  private department: string;

  constructor(name: string, department: string) {
    super(name);
    this.department = department;
  }

  public getElevatorPitch() {
    return `Hello, my name is ${this.name} and I work in ${this.department}.`;
  }
}

let howard = new Employee("Howard", "Sales");
console.log(howard.getElevatorPitch());
// console.log(howard.name);
